a9652ac09e
This CL: switches the light colors to be 3 scalars (SkColor3f) adds some dox Review URL: https://codereview.chromium.org/1265983003
100 lines
3.2 KiB
C++
Executable File
100 lines
3.2 KiB
C++
Executable File
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/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SampleCode.h"
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#include "Resources.h"
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#include "SkCanvas.h"
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#include "SkImageDecoder.h"
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#include "SkLightingShader.h"
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////////////////////////////////////////////////////////////////////////////
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class LightingView : public SampleView {
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public:
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SkAutoTUnref<SkShader> fShader;
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SkBitmap fDiffuseBitmap;
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SkBitmap fNormalBitmap;
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SkScalar fLightAngle;
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SkScalar fColorFactor;
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SkColor3f fAmbientColor;
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LightingView() {
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SkString diffusePath = GetResourcePath("brickwork-texture.jpg");
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SkImageDecoder::DecodeFile(diffusePath.c_str(), &fDiffuseBitmap);
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SkString normalPath = GetResourcePath("brickwork_normal-map.jpg");
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SkImageDecoder::DecodeFile(normalPath.c_str(), &fNormalBitmap);
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fLightAngle = 0.0f;
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fColorFactor = 0.0f;
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SkLightingShader::Light light;
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light.fColor = SkColor3f::Make(1.0f, 1.0f, 1.0f);
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light.fDirection.fX = SkScalarSin(fLightAngle)*SkScalarSin(SK_ScalarPI*0.25f);
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light.fDirection.fY = SkScalarCos(fLightAngle)*SkScalarSin(SK_ScalarPI*0.25f);
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light.fDirection.fZ = SkScalarCos(SK_ScalarPI*0.25f);
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fAmbientColor = SkColor3f::Make(0.1f, 0.1f, 0.1f);
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fShader.reset(SkLightingShader::Create(fDiffuseBitmap, fNormalBitmap,
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light, fAmbientColor, nullptr));
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}
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virtual ~LightingView() {}
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protected:
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// overrides from SkEventSink
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bool onQuery(SkEvent* evt) override {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "Lighting");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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void onDrawContent(SkCanvas* canvas) override {
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fLightAngle += 0.015f;
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fColorFactor += 0.01f;
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if (fColorFactor > 1.0f) {
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fColorFactor = 0.0f;
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}
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SkLightingShader::Light light;
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light.fColor = SkColor3f::Make(1.0f, 1.0f, fColorFactor);
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light.fDirection.fX = SkScalarSin(fLightAngle)*SkScalarSin(SK_ScalarPI*0.25f);
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light.fDirection.fY = SkScalarCos(fLightAngle)*SkScalarSin(SK_ScalarPI*0.25f);
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light.fDirection.fZ = SkScalarCos(SK_ScalarPI*0.25f);
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fShader.reset(SkLightingShader::Create(fDiffuseBitmap, fNormalBitmap,
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light, fAmbientColor, nullptr));
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SkPaint paint;
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paint.setShader(fShader);
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paint.setColor(SK_ColorBLACK);
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SkRect r = SkRect::MakeWH((SkScalar)fDiffuseBitmap.width(),
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(SkScalar)fDiffuseBitmap.height());
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canvas->drawRect(r, paint);
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// so we're constantly updating
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this->inval(NULL);
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}
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SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override {
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this->inval(NULL);
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return this->INHERITED::onFindClickHandler(x, y, modi);
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}
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private:
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new LightingView; }
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static SkViewRegister reg(MyFactory);
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